jcarousel.js 29.2 KB
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define('lib/ui/jCarousel/jcarousel', ["jquery"], function(require) 
{
	var jQuery = require("jquery");
	var $ = require("jquery");
	(function($) {
	    /**
	     * Creates a carousel for all matched elements.
	     *
	     * @example $("#mycarousel").jcarousel();
	     * @before <ul id="mycarousel" class="jcarousel-skin-name"><li>First item</li><li>Second item</li></ul>
	     * @result
	     *
	     * <div class="jcarousel-skin-name">
	     *   <div class="jcarousel-container">
	     *     <div disabled="disabled" class="jcarousel-prev jcarousel-prev-disabled"></div>
	     *     <div class="jcarousel-next"></div>
	     *     <div class="jcarousel-clip">
	     *       <ul class="jcarousel-list">
	     *         <li class="jcarousel-item-1">First item</li>
	     *         <li class="jcarousel-item-2">Second item</li>
	     *       </ul>
	     *     </div>
	     *   </div>
	     * </div>
	     *
	     * @name jcarousel
	     * @type jQuery
	     * @param Hash o A set of key/value pairs to set as configuration properties.
	     * @cat Plugins/jCarousel
	     */
	    $.fn.jcarousel = function(o) {
	        return this.each(function() {
	            new $jc(this, o);
	        });
	    };

	    // Default configuration properties.
	    var defaults = {
	        vertical: false,
	        start: 1,
	        offset: 1,
	        size: null,
	        scroll: 3,
	        visible: null,
	        animation: 'normal',
	        easing: 'swing',
	        auto: 0,
	        wrap: null,
	        initCallback: null,
	        reloadCallback: null,
	        itemLoadCallback: null,
	        itemFirstInCallback: null,
	        itemFirstOutCallback: null,
	        itemLastInCallback: null,
	        itemLastOutCallback: null,
	        itemVisibleInCallback: null,
	        itemVisibleOutCallback: null,
	        buttonNextHTML: '<div></div>',
	        buttonPrevHTML: '<div></div>',
	        buttonNextEvent: 'click',
	        buttonPrevEvent: 'click',
	        buttonNextCallback: null,
	        buttonPrevCallback: null
	    };

	    /**
	     * The jCarousel object.
	     *
	     * @constructor
	     * @name $.jcarousel
	     * @param Object e The element to create the carousel for.
	     * @param Hash o A set of key/value pairs to set as configuration properties.
	     * @cat Plugins/jCarousel
	     */
	    $.jcarousel = function(e, o) {
	        this.options    = $.extend({}, defaults, o || {});

	        this.locked     = false;

	        this.container  = null;
	        this.clip       = null;
	        this.list       = null;
	        this.buttonNext = null;
	        this.buttonPrev = null;

	        this.wh = !this.options.vertical ? 'width' : 'height';
	        this.lt = !this.options.vertical ? 'left' : 'top';

	        // Extract skin class
	        var skin = '', split = e.className.split(' ');

	        for (var i = 0; i < split.length; i++) {
	            if (split[i].indexOf('jcarousel-skin') != -1) {
	                $(e).removeClass(split[i]);
	                var skin = split[i];
	                break;
	            }
	        }

	        if (e.nodeName == 'UL' || e.nodeName == 'OL') {
	            this.list = $(e);
	            this.container = this.list.parent();

	            if (this.container.hasClass('jcarousel-clip')) {
	                if (!this.container.parent().hasClass('jcarousel-container'))
	                    this.container = this.container.wrap('<div></div>');

	                this.container = this.container.parent();
	            } else if (!this.container.hasClass('jcarousel-container'))
	                this.container = this.list.wrap('<div></div>').parent();
	        } else {
	            this.container = $(e);
	            this.list = $(e).find('>ul,>ol,div>ul,div>ol');
	        }

	        if (skin != '' && this.container.parent()[0].className.indexOf('jcarousel-skin') == -1)
	        	this.container.wrap('<div class=" '+ skin + '"></div>');

	        this.clip = this.list.parent();

	        if (!this.clip.length || !this.clip.hasClass('jcarousel-clip'))
	            this.clip = this.list.wrap('<div></div>').parent();

	        this.buttonPrev = $('.jcarousel-prev', this.container);

	        if (this.buttonPrev.size() == 0 && this.options.buttonPrevHTML != null)
	            this.buttonPrev = this.clip.before(this.options.buttonPrevHTML).prev();

	        this.buttonPrev.addClass(this.className('jcarousel-prev'));

	        this.buttonNext = $('.jcarousel-next', this.container);

	        if (this.buttonNext.size() == 0 && this.options.buttonNextHTML != null)
	            this.buttonNext = this.clip.before(this.options.buttonNextHTML).prev();

	        this.buttonNext.addClass(this.className('jcarousel-next'));

	        this.clip.addClass(this.className('jcarousel-clip'));
	        this.list.addClass(this.className('jcarousel-list'));
	        this.container.addClass(this.className('jcarousel-container'));

	        var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null;
	        var li = this.list.children('li');

	        var self = this;

	        if (li.size() > 0) {
	            var wh = 0, i = this.options.offset;
	            li.each(function() {
	                self.format(this, i++);
	                wh += self.dimension(this, di);
	            });

	            this.list.css(this.wh, wh + 'px');

	            // Only set if not explicitly passed as option
	            if (!o || o.size === undefined)
	                this.options.size = li.size();
	        }

	        // For whatever reason, .show() does not work in Safari...
	        this.container.css('display', 'block');
	        this.buttonNext.css('display', 'block');
	        this.buttonPrev.css('display', 'block');

	        this.funcNext   = function() { self.next(); };
	        this.funcPrev   = function() { self.prev(); };
	        this.funcResize = function() { self.reload(); };

	        if (this.options.initCallback != null)
	            this.options.initCallback(this, 'init');

	        if ($.browser.safari) {
	            this.buttons(false, false);
	            $(window).bind('load', function() { self.setup(); });
	        } else
	            this.setup();
	    };

	    // Create shortcut for internal use
	    var $jc = $.jcarousel;

	    $jc.fn = $jc.prototype = {
	        jcarousel: '0.2.3'
	    };

	    $jc.fn.extend = $jc.extend = $.extend;

	    $jc.fn.extend({
	        /**
	         * Setups the carousel.
	         *
	         * @name setup
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        setup: function() {
	            this.first     = null;
	            this.last      = null;
	            this.prevFirst = null;
	            this.prevLast  = null;
	            this.animating = false;
	            this.timer     = null;
	            this.tail      = null;
	            this.inTail    = false;

	            if (this.locked)
	                return;

	            this.list.css(this.lt, this.pos(this.options.offset) + 'px');
	            var p = this.pos(this.options.start);
	            this.prevFirst = this.prevLast = null;
	            this.animate(p, false);

	            $(window).unbind('resize', this.funcResize).bind('resize', this.funcResize);
	        },

	        /**
	         * Clears the list and resets the carousel.
	         *
	         * @name reset
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        reset: function() {
	            this.list.empty();

	            this.list.css(this.lt, '0px');
	            this.list.css(this.wh, '10px');

	            if (this.options.initCallback != null)
	                this.options.initCallback(this, 'reset');

	            this.setup();
	        },

	        /**
	         * Reloads the carousel and adjusts positions.
	         *
	         * @name reload
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        reload: function() {
	            if (this.tail != null && this.inTail)
	                this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + this.tail);

	            this.tail   = null;
	            this.inTail = false;

	            if (this.options.reloadCallback != null)
	                this.options.reloadCallback(this);

	            if (this.options.visible != null) {
	                var self = this;
	                var di = Math.ceil(this.clipping() / this.options.visible), wh = 0, lt = 0;
	                $('li', this.list).each(function(i) {
	                    wh += self.dimension(this, di);
	                    if (i + 1 < self.first)
	                        lt = wh;
	                });

	                this.list.css(this.wh, wh + 'px');
	                this.list.css(this.lt, -lt + 'px');
	            }

	            this.scroll(this.first, false);
	        },

	        /**
	         * Locks the carousel.
	         *
	         * @name lock
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        lock: function() {
	            this.locked = true;
	            this.buttons();
	        },

	        /**
	         * Unlocks the carousel.
	         *
	         * @name unlock
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        unlock: function() {
	            this.locked = false;
	            this.buttons();
	        },

	        /**
	         * Sets the size of the carousel.
	         *
	         * @name size
	         * @type undefined
	         * @param Number s The size of the carousel.
	         * @cat Plugins/jCarousel
	         */
	        size: function(s) {
	            if (s != undefined) {
	                this.options.size = s;
	                if (!this.locked)
	                    this.buttons();
	            }

	            return this.options.size;
	        },

	        /**
	         * Checks whether a list element exists for the given index (or index range).
	         *
	         * @name get
	         * @type bool
	         * @param Number i The index of the (first) element.
	         * @param Number i2 The index of the last element.
	         * @cat Plugins/jCarousel
	         */
	        has: function(i, i2) {
	            if (i2 == undefined || !i2)
	                i2 = i;

	            if (this.options.size !== null && i2 > this.options.size)
	            	i2 = this.options.size;

	            for (var j = i; j <= i2; j++) {
	                var e = this.get(j);
	                if (!e.length || e.hasClass('jcarousel-item-placeholder'))
	                    return false;
	            }

	            return true;
	        },

	        /**
	         * Returns a jQuery object with list element for the given index.
	         *
	         * @name get
	         * @type jQuery
	         * @param Number i The index of the element.
	         * @cat Plugins/jCarousel
	         */
	        get: function(i) {
	            return $('.jcarousel-item-' + i, this.list);
	        },

	        /**
	         * Adds an element for the given index to the list.
	         * If the element already exists, it updates the inner html.
	         * Returns the created element as jQuery object.
	         *
	         * @name add
	         * @type jQuery
	         * @param Number i The index of the element.
	         * @param String s The innerHTML of the element.
	         * @cat Plugins/jCarousel
	         */
	        add: function(i, s) {
	            var e = this.get(i), old = 0, add = 0;

	            if (e.length == 0) {
	                var c, e = this.create(i), j = $jc.intval(i);
	                while (c = this.get(--j)) {
	                    if (j <= 0 || c.length) {
	                        j <= 0 ? this.list.prepend(e) : c.after(e);
	                        break;
	                    }
	                }
	            } else
	                old = this.dimension(e);

	            e.removeClass(this.className('jcarousel-item-placeholder'));
	            typeof s == 'string' ? e.html(s) : e.empty().append(s);

	            var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null;
	            var wh = this.dimension(e, di) - old;

	            if (i > 0 && i < this.first)
	                this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - wh + 'px');

	            this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) + wh + 'px');

	            return e;
	        },

	        /**
	         * Removes an element for the given index from the list.
	         *
	         * @name remove
	         * @type undefined
	         * @param Number i The index of the element.
	         * @cat Plugins/jCarousel
	         */
	        remove: function(i) {
	            var e = this.get(i);

	            // Check if item exists and is not currently visible
	            if (!e.length || (i >= this.first && i <= this.last))
	                return;

	            var d = this.dimension(e);

	            if (i < this.first)
	                this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + d + 'px');

	            e.remove();

	            this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) - d + 'px');
	        },

	        /**
	         * Moves the carousel forwards.
	         *
	         * @name next
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        next: function() {
	            this.stopAuto();

	            if (this.tail != null && !this.inTail)
	                this.scrollTail(false);
	            else
	                this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'last') && this.options.size != null && this.last == this.options.size) ? 1 : this.first + this.options.scroll);
	        },

	        /**
	         * Moves the carousel backwards.
	         *
	         * @name prev
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        prev: function() {
	            this.stopAuto();

	            if (this.tail != null && this.inTail)
	                this.scrollTail(true);
	            else
	                this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'first') && this.options.size != null && this.first == 1) ? this.options.size : this.first - this.options.scroll);
	        },

	        /**
	         * Scrolls the tail of the carousel.
	         *
	         * @name scrollTail
	         * @type undefined
	         * @param Bool b Whether scroll the tail back or forward.
	         * @cat Plugins/jCarousel
	         */
	        scrollTail: function(b) {
	            if (this.locked || this.animating || !this.tail)
	                return;

	            var pos  = $jc.intval(this.list.css(this.lt));

	            !b ? pos -= this.tail : pos += this.tail;
	            this.inTail = !b;

	            // Save for callbacks
	            this.prevFirst = this.first;
	            this.prevLast  = this.last;

	            this.animate(pos);
	        },

	        /**
	         * Scrolls the carousel to a certain position.
	         *
	         * @name scroll
	         * @type undefined
	         * @param Number i The index of the element to scoll to.
	         * @param Bool a Flag indicating whether to perform animation.
	         * @cat Plugins/jCarousel
	         */
	        scroll: function(i, a) {
	            if (this.locked || this.animating)
	                return;

	            this.animate(this.pos(i), a);
	        },

	        /**
	         * Prepares the carousel and return the position for a certian index.
	         *
	         * @name pos
	         * @type Number
	         * @param Number i The index of the element to scoll to.
	         * @cat Plugins/jCarousel
	         */
	        pos: function(i) {
	            if (this.locked || this.animating)
	                return;

	            i = $jc.intval(i);
	            if (this.options.wrap != 'circular')
	                i = i < 1 ? 1 : (this.options.size && i > this.options.size ? this.options.size : i);

	            var back = this.first > i;
	            var pos  = $jc.intval(this.list.css(this.lt));

	            // Create placeholders, new list width/height
	            // and new list position
	            var f = this.options.wrap != 'circular' && this.first <= 1 ? 1 : this.first;
	            var c = back ? this.get(f) : this.get(this.last);
	            var j = back ? f : f - 1;
	            var e = null, l = 0, p = false, d = 0;

	            while (back ? --j >= i : ++j < i) {
	                e = this.get(j);
	                p = !e.length;
	                if (e.length == 0) {
	                    e = this.create(j).addClass(this.className('jcarousel-item-placeholder'));
	                    c[back ? 'before' : 'after' ](e);
	                }

	                c = e;
	                d = this.dimension(e);

	                if (p)
	                    l += d;

	                if (this.first != null && (this.options.wrap == 'circular' || (j >= 1 && (this.options.size == null || j <= this.options.size))))
	                    pos = back ? pos + d : pos - d;
	            }

	            // Calculate visible items
	            var clipping = this.clipping();
	            var cache = [];
	            var visible = 0, j = i, v = 0;
	            var c = this.get(i - 1);

	            while (++visible) {
	                e = this.get(j);
	                p = !e.length;
	                if (e.length == 0) {
	                    e = this.create(j).addClass(this.className('jcarousel-item-placeholder'));
	                    // This should only happen on a next scroll
	                    c.length == 0 ? this.list.prepend(e) : c[back ? 'before' : 'after' ](e);
	                }

	                c = e;
	                var d = this.dimension(e);
	                if (d == 0) {
	                    alert('jCarousel: No width/height set for items. This will cause an infinite loop. Aborting...');
	                    return 0;
	                }

	                if (this.options.wrap != 'circular' && this.options.size !== null && j > this.options.size)
	                    cache.push(e);
	                else if (p)
	                    l += d;

	                v += d;

	                if (v >= clipping)
	                    break;

	                j++;
	            }

	             // Remove out-of-range placeholders
	            for (var x = 0; x < cache.length; x++)
	                cache[x].remove();

	            // Resize list
	            if (l > 0) {
	                this.list.css(this.wh, this.dimension(this.list) + l + 'px');

	                if (back) {
	                    pos -= l;
	                    this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - l + 'px');
	                }
	            }

	            // Calculate first and last item
	            var last = i + visible - 1;
	            if (this.options.wrap != 'circular' && this.options.size && last > this.options.size)
	                last = this.options.size;

	            if (j > last) {
	                visible = 0, j = last, v = 0;
	                while (++visible) {
	                    var e = this.get(j--);
	                    if (!e.length)
	                        break;
	                    v += this.dimension(e);
	                    if (v >= clipping)
	                        break;
	                }
	            }

	            var first = last - visible + 1;
	            if (this.options.wrap != 'circular' && first < 1)
	                first = 1;

	            if (this.inTail && back) {
	                pos += this.tail;
	                this.inTail = false;
	            }

	            this.tail = null;
	            if (this.options.wrap != 'circular' && last == this.options.size && (last - visible + 1) >= 1) {
	                var m = $jc.margin(this.get(last), !this.options.vertical ? 'marginRight' : 'marginBottom');
	                if ((v - m) > clipping)
	                    this.tail = v - clipping - m;
	            }

	            // Adjust position
	            while (i-- > first)
	                pos += this.dimension(this.get(i));

	            // Save visible item range
	            this.prevFirst = this.first;
	            this.prevLast  = this.last;
	            this.first     = first;
	            this.last      = last;

	            return pos;
	        },

	        /**
	         * Animates the carousel to a certain position.
	         *
	         * @name animate
	         * @type undefined
	         * @param mixed p Position to scroll to.
	         * @param Bool a Flag indicating whether to perform animation.
	         * @cat Plugins/jCarousel
	         */
	        animate: function(p, a) {
	            if (this.locked || this.animating)
	                return;

	            this.animating = true;

	            var self = this;
	            var scrolled = function() {
	                self.animating = false;

	                if (p == 0)
	                    self.list.css(self.lt,  0);

	                if (self.options.wrap == 'both' || self.options.wrap == 'last' || self.options.size == null || self.last < self.options.size)
	                    self.startAuto();

	                self.buttons();
	                self.notify('onAfterAnimation');
	            };

	            this.notify('onBeforeAnimation');

	            // Animate
	            if (!this.options.animation || a == false) {
	                this.list.css(this.lt, p + 'px');
	                scrolled();
	            } else {
	                var o = !this.options.vertical ? {'left': p} : {'top': p};
	                this.list.animate(o, this.options.animation, this.options.easing, scrolled);
	            }
	        },

	        /**
	         * Starts autoscrolling.
	         *
	         * @name auto
	         * @type undefined
	         * @param Number s Seconds to periodically autoscroll the content.
	         * @cat Plugins/jCarousel
	         */
	        startAuto: function(s) {
	            if (s != undefined)
	                this.options.auto = s;

	            if (this.options.auto == 0)
	                return this.stopAuto();

	            if (this.timer != null)
	                return;

	            var self = this;
	            this.timer = setTimeout(function() { self.next(); }, this.options.auto * 1000);
	        },

	        /**
	         * Stops autoscrolling.
	         *
	         * @name stopAuto
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        stopAuto: function() {
	            if (this.timer == null)
	                return;

	            clearTimeout(this.timer);
	            this.timer = null;
	        },

	        /**
	         * Sets the states of the prev/next buttons.
	         *
	         * @name buttons
	         * @type undefined
	         * @cat Plugins/jCarousel
	         */
	        buttons: function(n, p) {
	            if (n == undefined || n == null) {
	                var n = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'first') || this.options.size == null || this.last < this.options.size);
	                if (!this.locked && (!this.options.wrap || this.options.wrap == 'first') && this.options.size != null && this.last >= this.options.size)
	                    n = this.tail != null && !this.inTail;
	            }

	            if (p == undefined || p == null) {
	                var p = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'last') || this.first > 1);
	                if (!this.locked && (!this.options.wrap || this.options.wrap == 'last') && this.options.size != null && this.first == 1)
	                    p = this.tail != null && this.inTail;
	            }

	            var self = this;

	            this.buttonNext[n ? 'bind' : 'unbind'](this.options.buttonNextEvent, this.funcNext)[n ? 'removeClass' : 'addClass'](this.className('jcarousel-next-disabled')).attr('disabled', n ? false : true);
	            this.buttonPrev[p ? 'bind' : 'unbind'](this.options.buttonPrevEvent, this.funcPrev)[p ? 'removeClass' : 'addClass'](this.className('jcarousel-prev-disabled')).attr('disabled', p ? false : true);

	            if (this.buttonNext.length > 0 && (this.buttonNext[0].jcarouselstate == undefined || this.buttonNext[0].jcarouselstate != n) && this.options.buttonNextCallback != null) {
	                this.buttonNext.each(function() { self.options.buttonNextCallback(self, this, n); });
	                this.buttonNext[0].jcarouselstate = n;
	            }

	            if (this.buttonPrev.length > 0 && (this.buttonPrev[0].jcarouselstate == undefined || this.buttonPrev[0].jcarouselstate != p) && this.options.buttonPrevCallback != null) {
	                this.buttonPrev.each(function() { self.options.buttonPrevCallback(self, this, p); });
	                this.buttonPrev[0].jcarouselstate = p;
	            }
	        },

	        notify: function(evt) {
	            var state = this.prevFirst == null ? 'init' : (this.prevFirst < this.first ? 'next' : 'prev');

	            // Load items
	            this.callback('itemLoadCallback', evt, state);

	            if (this.prevFirst !== this.first) {
	                this.callback('itemFirstInCallback', evt, state, this.first);
	                this.callback('itemFirstOutCallback', evt, state, this.prevFirst);
	            }

	            if (this.prevLast !== this.last) {
	                this.callback('itemLastInCallback', evt, state, this.last);
	                this.callback('itemLastOutCallback', evt, state, this.prevLast);
	            }

	            this.callback('itemVisibleInCallback', evt, state, this.first, this.last, this.prevFirst, this.prevLast);
	            this.callback('itemVisibleOutCallback', evt, state, this.prevFirst, this.prevLast, this.first, this.last);
	        },

	        callback: function(cb, evt, state, i1, i2, i3, i4) {
	            if (this.options[cb] == undefined || (typeof this.options[cb] != 'object' && evt != 'onAfterAnimation'))
	                return;

	            var callback = typeof this.options[cb] == 'object' ? this.options[cb][evt] : this.options[cb];

	            if (!$.isFunction(callback))
	                return;

	            var self = this;

	            if (i1 === undefined)
	                callback(self, state, evt);
	            else if (i2 === undefined)
	                this.get(i1).each(function() { callback(self, this, i1, state, evt); });
	            else {
	                for (var i = i1; i <= i2; i++)
	                    if (i !== null && !(i >= i3 && i <= i4))
	                        this.get(i).each(function() { callback(self, this, i, state, evt); });
	            }
	        },

	        create: function(i) {
	            return this.format('<li></li>', i);
	        },

	        format: function(e, i) {
	            var $e = $(e).addClass(this.className('jcarousel-item')).addClass(this.className('jcarousel-item-' + i));
	            $e.attr('jcarouselindex', i);
	            return $e;
	        },

	        className: function(c) {
	            return c + ' ' + c + (!this.options.vertical ? '-horizontal' : '-vertical');
	        },

	        dimension: function(e, d) {
	            var el = e.jquery != undefined ? e[0] : e;

	            var old = !this.options.vertical ?
	                el.offsetWidth + $jc.margin(el, 'marginLeft') + $jc.margin(el, 'marginRight') :
	                el.offsetHeight + $jc.margin(el, 'marginTop') + $jc.margin(el, 'marginBottom');

	            if (d == undefined || old == d)
	                return old;

	            var w = !this.options.vertical ?
	                d - $jc.margin(el, 'marginLeft') - $jc.margin(el, 'marginRight') :
	                d - $jc.margin(el, 'marginTop') - $jc.margin(el, 'marginBottom');

	            $(el).css(this.wh, w + 'px');

	            return this.dimension(el);
	        },

	        clipping: function() {
	            return !this.options.vertical ?
	                this.clip[0].offsetWidth - $jc.intval(this.clip.css('borderLeftWidth')) - $jc.intval(this.clip.css('borderRightWidth')) :
	                this.clip[0].offsetHeight - $jc.intval(this.clip.css('borderTopWidth')) - $jc.intval(this.clip.css('borderBottomWidth'));
	        },

	        index: function(i, s) {
	            if (s == undefined)
	                s = this.options.size;

	            return Math.round((((i-1) / s) - Math.floor((i-1) / s)) * s) + 1;
	        }
	    });
	"jcarousel-item jcarousel-item-horizontal jcarousel-item-17 jcarousel-item-17-horizontal jcarousel-item-placeholder jcarousel-item-placeholder-horizontal"
	    $jc.extend({
	        /**
	         * Gets/Sets the global default configuration properties.
	         *
	         * @name defaults
	         * @descr Gets/Sets the global default configuration properties.
	         * @type Hash
	         * @param Hash d A set of key/value pairs to set as configuration properties.
	         * @cat Plugins/jCarousel
	         */
	        defaults: function(d) {
	            return $.extend(defaults, d || {});
	        },

	        margin: function(e, p) {
	            if (!e)
	                return 0;

	            var el = e.jquery != undefined ? e[0] : e;

	            if (p == 'marginRight' && $.browser.safari) {
	                var old = {'display': 'block', 'float': 'none', 'width': 'auto'}, oWidth, oWidth2;

	                $.swap(el, old, function() { oWidth = el.offsetWidth; });

	                old['marginRight'] = 0;
	                $.swap(el, old, function() { oWidth2 = el.offsetWidth; });

	                return oWidth2 - oWidth;
	            }

	            return $jc.intval($.css(el, p));
	        },

	        intval: function(v) {
	            v = parseInt(v);
	            return isNaN(v) ? 0 : v;
	        }
	    });

	})(jQuery);
});